Induction quenching system and method for bearing cylindrical face of self-limiting seat of heavy truck plate spring

Abstract

The invention discloses an induction quenching system and method for a bearing cylindrical face of a self-limiting seat of a heavy truck plate spring. The induction quenching system comprises a quenching machine tool, an inductor, a quenching circulating cooling liquid tank, a medium-frequency power supply and a quenching transformer. A locating tool set is installed on the quenching machine tool, the locating tool set can move up and down along a support of the quenching machine tool, the locating tool set is used for locating a work piece, the inductor is connected to the medium-frequency power supply through a quenching transformer, the inductor is further matched with the locating tool set of the quenching machine tool to heat the work piece, the locating tool set is driven by a driving device, the driving device is controlled by a controller, and the quenching circulating cooling liquid tank is arranged on one side of the quenching machine tool. The induction quenching system combines a fixed-point heating method and a scanning heating method to heat repeatedly and circularly, so that the heating temperature of the whole heating face is relatively even, and quenched products can meet the requirements for the depth and the hardness of a hardened layer. Meanwhile, the induction quenching system can achieve the purpose of using small-power-output equipment to process large products and reduces fund investment.

Description

[0001] technical field [0002] The invention relates to an induction hardening system and method for curved surface parts, in particular to an induction hardening system and method for a heavy truck leaf spring self-limiting seat bearing a cylindrical surface. Background technique [0003] The heavy-duty automobile leaf spring self-limiting seat is a casting blank part. Its structural shape is like a square tube with different wall thickness. The head of the leaf spring is inserted into the square hole and pressed on the bearing surface with the thickest wall thickness. The bearing surface is non-planar, which is an arched cylindrical surface along the axial direction of the square hole, protruding in the middle of the hole, and the two ends of the hole are low; The load distributed by the whole vehicle, and when the whole vehicle bumps and vibrates, it bears the impact load several times beyond the static load, and the other three sides of the square hole are planes, which...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem of uneven hardened layer depth caused by uneven heating of the cylindrical surface of the self-limiting seat of the leaf spring in the prior art, and the appearance of some unhardened areas, which affect the service life of the product; provide a process method And related equipment, fixtures and sensors, quenching and cooling system, and the induction quenching process for the self-limiting seat of the heavy-duty truck leaf spring and its bearing cylindrical surface, to achieve uniform hardened layer depth and qualified hardness on the processed surface

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